Attacker Value
Unknown
(0 users assessed)
Exploitability
Unknown
(0 users assessed)
User Interaction
None
Privileges Required
None
Attack Vector
Network
0

CVE-2019-1739

Disclosure Date: March 27, 2019
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Description

A vulnerability in the Network-Based Application Recognition (NBAR) feature of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload. This vulnerability is due to a parsing issue on DNS packets. An attacker could exploit this vulnerability by sending crafted DNS packets through routers that are running an affected version and have NBAR enabled. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a denial of service (DoS) condition.

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CVSS V3 Severity and Metrics
Base Score:
7.5 High
Impact Score:
3.6
Exploitability Score:
3.9
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector (AV):
Network
Attack Complexity (AC):
Low
Privileges Required (PR):
None
User Interaction (UI):
None
Scope (S):
Unchanged
Confidentiality (C):
None
Integrity (I):
None
Availability (A):
High

General Information

Vendors

  • cisco

Products

  • ios 15.1(2)sg8a,
  • ios 15.1(3)svg3d,
  • ios 15.1(3)svi1b,
  • ios 15.1(3)svk4b,
  • ios 15.1(3)svk4c,
  • ios 15.1(3)svm3,
  • ios 15.1(3)svn2,
  • ios 15.1(3)svo1,
  • ios 15.1(3)svo2,
  • ios 15.1(3)svo3,
  • ios 15.1(3)svo4,
  • ios 15.1(3)svp1,
  • ios 15.1(3)svp2,
  • ios 15.1(4)m12c,
  • ios 15.2(3)ea1,
  • ios 15.2(4a)ea5,
  • ios 15.3(3)ja1n,
  • ios 15.3(3)jd,
  • ios 15.3(3)jd11,
  • ios 15.3(3)jd12,
  • ios 15.3(3)jd13,
  • ios 15.3(3)jd14,
  • ios 15.3(3)jd2,
  • ios 15.3(3)jd3,
  • ios 15.3(3)jd4,
  • ios 15.3(3)jd5,
  • ios 15.3(3)jd6,
  • ios 15.3(3)jd7,
  • ios 15.3(3)jd8,
  • ios 15.3(3)jd9,
  • ios 15.3(3)je,
  • ios 15.3(3)jf,
  • ios 15.3(3)jf1,
  • ios 15.3(3)jf2,
  • ios 15.3(3)jf35,
  • ios 15.3(3)jf4,
  • ios 15.3(3)jf5,
  • ios 15.3(3)jg,
  • ios 15.3(3)jg1,
  • ios 15.3(3)jh,
  • ios 15.3(3)ji,
  • ios 15.3(3)ji2,
  • ios 15.3(3)jnp,
  • ios 15.3(3)jnp1,
  • ios 15.3(3)jnp3,
  • ios 15.3(3)jpb,
  • ios 15.3(3)jpb1,
  • ios 15.3(3)jpc,
  • ios 15.3(3)jpc1,
  • ios 15.3(3)jpc2,
  • ios 15.3(3)jpc3,
  • ios 15.3(3)jpc5,
  • ios 15.3(3)jpd,
  • ios 15.5(3)m,
  • ios 15.5(3)m0a,
  • ios 15.5(3)m1,
  • ios 15.5(3)m2,
  • ios 15.5(3)m2a,
  • ios 15.5(3)m3,
  • ios 15.5(3)m4,
  • ios 15.5(3)m4a,
  • ios 15.5(3)m4b,
  • ios 15.5(3)m4c,
  • ios 15.5(3)m5,
  • ios 15.5(3)m5a,
  • ios 15.5(3)s,
  • ios 15.5(3)s0a,
  • ios 15.5(3)s1,
  • ios 15.5(3)s1a,
  • ios 15.5(3)s2,
  • ios 15.5(3)s3,
  • ios 15.5(3)s4,
  • ios 15.5(3)s5,
  • ios 15.5(3)sn,
  • ios 15.5(3)sn0a,
  • ios 15.6(1)s,
  • ios 15.6(1)s1,
  • ios 15.6(1)s2,
  • ios 15.6(1)s3,
  • ios 15.6(1)s4,
  • ios 15.6(1)sn,
  • ios 15.6(1)sn1,
  • ios 15.6(1)sn2,
  • ios 15.6(1)sn3,
  • ios 15.6(1)t,
  • ios 15.6(1)t0a,
  • ios 15.6(1)t1,
  • ios 15.6(1)t2,
  • ios 15.6(2)s,
  • ios 15.6(2)s1,
  • ios 15.6(2)s2,
  • ios 15.6(2)s3,
  • ios 15.6(2)s4,
  • ios 15.6(2)sn,
  • ios 15.6(2)sp3b,
  • ios 15.6(2)t,
  • ios 15.6(2)t0a,
  • ios 15.6(2)t1,
  • ios 15.6(2)t2,
  • ios 15.6(3)m,
  • ios 15.6(3)m0a,
  • ios 15.6(3)m1,
  • ios 15.6(3)m1a,
  • ios 15.6(3)m1b,
  • ios 15.6(3)sn,
  • ios 15.6(4)sn,
  • ios 15.6(5)sn,
  • ios 15.6(6)sn,
  • ios 15.6(7)sn,
  • ios xe 16.2.1,
  • ios xe 16.2.2,
  • ios xe 16.3.1,
  • ios xe 16.3.1a,
  • ios xe 16.3.2,
  • ios xe 16.3.3,
  • ios xe 16.3.4,
  • ios xe 16.4.1,
  • ios xe 16.4.2,
  • ios xe 16.4.3,
  • ios xe 16.5.1,
  • ios xe 16.5.1a,
  • ios xe 16.5.1b,
  • ios xe 3.16.0as,
  • ios xe 3.16.0bs,
  • ios xe 3.16.0cs,
  • ios xe 3.16.0s,
  • ios xe 3.16.1as,
  • ios xe 3.16.1s,
  • ios xe 3.16.2as,
  • ios xe 3.16.2bs,
  • ios xe 3.16.2s,
  • ios xe 3.16.3as,
  • ios xe 3.16.3s,
  • ios xe 3.16.4as,
  • ios xe 3.16.4bs,
  • ios xe 3.16.4cs,
  • ios xe 3.16.4ds,
  • ios xe 3.16.4es,
  • ios xe 3.16.4gs,
  • ios xe 3.16.4s,
  • ios xe 3.16.5as,
  • ios xe 3.16.5s,
  • ios xe 3.17.0s,
  • ios xe 3.17.1as,
  • ios xe 3.17.1s,
  • ios xe 3.17.3s,
  • ios xe 3.17.4s,
  • ios xe 3.18.0as,
  • ios xe 3.18.0s,
  • ios xe 3.18.0sp,
  • ios xe 3.18.1asp,
  • ios xe 3.18.1bsp,
  • ios xe 3.18.1csp,
  • ios xe 3.18.1gsp,
  • ios xe 3.18.1hsp,
  • ios xe 3.18.1isp,
  • ios xe 3.18.1s,
  • ios xe 3.18.1sp,
  • ios xe 3.18.2asp,
  • ios xe 3.18.2s,
  • ios xe 3.18.2sp,
  • ios xe 3.18.3s,
  • ios xe 3.18.4s,
  • ios xe 3.2.0ja

Additional Info

Technical Analysis